Door-controlling means.



H. G. VOIGHT.

DOOB. CONTROLLING MEANS. 'APPLIOATION FILED NOV. 27, 1912.

1,069,077w Patented July 29, 1913.

Fig-.5-

COLUMBIA PLANQGRAPH 60.. WASHINGTON. D, c,

UNITED STATES PATENT OFFICE.

HENRY G. VOIGI-I'I, on NEW BRITAIN, CONNECTICUT.

DOOR-CONTROLLING- MEANS.

Specification of Letters Patent.

Patented July 29, 1913.

Application filed November 27, 1912. Serial No. 733,735.

the door may be locked from the inside and Y may be unlocked readilyfrom the outside but only by the use of a proper key. These and otheradvantages are described in detail in the following specification takenin connection with the accompanying drawings forming part thereof andillustrating a preferable embodiment ofthe invention.

In these drawings, Figure 1 is a fragmentary view in side elevation of adoor control constructed in accordance with the present lnventlon. F 1g.2 1s an edge elevation, partly in section, of the parts shown in Fig. 1.Figs. 3 and 4 are views of the unlocking key.

In the present case, a full detailed de scription of the doorcontrolling means employed is unnecessary since the same is fully setforth in my Patent No. 1,041,706, dated October 15th, 1912. Suffice itto say that the controlling means comprises generally two interconnectedtoggle arms pivotally secured respectively to the forward edge of thesliding door and to a stationary abutment in rear thereof, these armsswinging with the opening and closing of the door and being straightenedout in horizontal alinement when the door is closed, thereby providing adead center lock and necessitating that this horizontal alinement bebroken before the door can be moved to open position. In the presentcase, therefore, I am illustrating and describing only such parts of thedoor control as are essential to an understanding of the presentinvention.

In the drawings,'1 designates a sliding door, and 2 a bracket platesecured thereto adjacent its forward edge.

3 represents one of the pair of toggle arms of the door control, thisarm 3 being pivoted to the bracket plate 2 as at 4.. When the toggle arm3 stands in the horizontal posi- 1,041,706 aforesaid.

upwardly from looking tion shown in Fig. 1 of the drawings, the door 1is in closed locked position, inasmuch as the toggle arms are inalinement, as will be seen by reference to my Patent No. When the togglearm 3 is swung on its pivot from the position shown in Fig. 1, the doormay be moved to open position. The particular means employed herein forswinging the toggle arm 3 comprises an arm 5 pivotally mounted at 7 uponthe bracket plate 2 and having a cam slot therein in which slot stands apin 6 carried by the arm 3.

8 designates an operating handle pivoted at 9 to the bracket plate 2 andprovided with a pin or shoulder 10 extending from its rear face andarranged to engage the edge of the arm 5 and swing the same in adirection to lift the toggle arm, the cam slot portion of the arm ridingover the pin 6 and by reason of its arc, lifting said pin and its togglearm position. The pin 10 is moved to effect this operation by swingingthe handle 8 to the left from the position shown in Fig. 1. It isdesirable to hold the operating arm 10 against outward displacement sothat it always is in proper position for cooperatioii with the unlockingmechanism hereinafter described and so that it cannot be pulledoutwardly and into the path of the elevator car, this last beingpossible as in some cases the distance between the edge of the car andthe face of the door is rather limited. To this end the lower edge ofthe bracket plate 2 is offset at 11 and formed on an arc with the pivotpoint 9 as the center, the operating handle 8 being similarly offset atthat point and provided with a rearwardly extending lug 12 ininterlocking engagement with the rear face of the offset and holding thehandle against outward displacement while permitting free swingingmovement thereof.

13 designates a stop pin for the handle 8 positioned to limit itsswinging movement in one direction. 14 designates a second stop memberarranged intermediate the ends of the handle and designed to limit itsswinging movement in the opposite direction. In the particularembodiment herein, the stop member 14 performs a second function in thatit is adapted to act as a roll-back and to swing the handle member 8 ina direction to release or unlock the door. In the drawings, this stopcomprises a bar 14 having'an offset arm extending therefrom and pivotedat 15 on the bracket plate, the ends of said bar 1 1 preferably carryingone or.

which may be employed at the outer side of the door 1, and which mayconnect in any suitable manner with the spindle 16 so that the lattermay be turned. In the drawings 1 I have shown the simplest possible formot" connection in which the outer end of the spindle 17 is provided witha squared end 18 positioned in a countersunk pocket formed 1 in theouter face of the door so as not to interfere with the sliding of thedoor. The" key 19 may connect directly with this squared end 18 of thespindle, said key having an end opening arranged to fit on the squaredend 17 of the spindle. By turning the key 16, the stop member 1 1 isturned so that one end will swing in a direction to move the handle 8and in turn swing the cam arm 5, which arm in turn lifts the toggle arm8 unlocking the door and starting it on its opening movement. Bypositioning the unlocking member 14 intermediate the ends of theoperating handle, a maximum leverage is secured whereby the unlockingoperation, by turning the spindle 17, is accomplished with minimumeffort. After the key 19 has been used to unlock the toggle arm 3, thedoor may be fully opened by pressure thereagainst in door openingdirection.

Nhile I have described herein a specific embodiment of my invention, itis understood that various structural changes are possible within thespirit of the invention and the scope of the appended claims.

IVhat I claim, therefore, and desire to secure by Letters Patent is:

1. In a device of the character described, a sliding door, a relativelystationary abutment, toggle arms connecting said door and abutmentmoving with the opening and closing of the door and adapted to be lockedagainst door opening movement when said door is in closed position, acontrolling handle carried by said door and cooperating with said togglearms to release the same from locked position, and means independent ofsaid handle and operable from the opposite side of the door forreleasing said arms.

2. In a. device of the character described, a sliding door, a relativelystationary abutment, toggle arms connecting said door and abutmentmoving with the opening and closing 01": the door and adapted to belocked against door opening movement when said door is in closedposition, a controlling handle carried by said door and cooperating withsaid toggle arms to release the same.

from locked position, and key controlled means independent of saidhandle and operable from the opposite side of the door for releasingsaid arms.

3. In a device of the character described, a sliding door, a relativelystationary abut.- ment, toggle arms connecting said door andabutmentmoving with the opening and closing of the door and adapted tolock said door against opening movement upon the closing of the door, acontrolling handle pivotally carried by the door and in operativeconnection with said toggle arms to move the same from locking position,and means independent of said handle and controlled from the oppositeside of the door positioned and adapted to engage said handleintermediate its ends to swing the same in a direction to move said armsfrom looking position. i

4. In a device of the character described, a sliding door, a relativelystationary abutment,-toggle arms connecting said door and abutmentmoving with the opening and closing of the door and adapted to lock saiddoor against opening movement upon the closing'of the door, acontrolling handle pivotally carried by the door and in operativeconnection with said toggle arms to move the same from looking position,means independent of said handle and controlled from the opposite sideof the door positioned and adapted to engage said handle intermediateits ends to swing the same in a direction to move said arms from lookingposition, and means guiding the movement of said handle and maintainingitin the same plane.

5. In a device of the character described, a sliding door, a relativelystationary abutment, toggle arms connecting said door and abutmentmoving with the opening and closing of the door and adapted to lock saiddoor against opening movement upon the closing of the door, acontrolling handle pivotally carried by the door and in operativeconnection with said toggle arms to move the same from looking position,means independent of said handle positioned to engage and stop the samein door closed position, said means being operable from the oppositeside of the door to swing said handle in a direction to move said armsto unlocked position. i

6. In a device of the character described, a sliding door, a relativelystationary abutment, toggle arms connecting said door and abutmentmoving with the opening and closing of the door and adapted to lock saiddoor against opening movement upon the closing of the door, acontrolling handle piv otally carried by the door and in operativeconnection with said toggle arms to move the same from locking position,means pivotally carried by the door independently of said handle andpositioned to engage said handle intermediate its ends to stop the samein door closed position, said stop means being operable by key controlfrom thevopposite side of the door to swing said handle in a directionto move said arms to unlocked position.

7. In a device of the character described, a sliding door, a relativelystationary abutment, toggle arms connecting said door and abutment andmoving with the opening and closing of the door, an operating handle carried by and moving relative to the door and operatively connected tosaid arms to move the same in a direction to open said door, a lugcarried by said handle, and a curved guide plate fixedly carried by saiddoor and interlockingly engaged by said lug.

S. In a device of the character described, in combination, a slidingdoor, means carried thereby for locking said door in closed position, amanually controlled operating member carried by said door mounted formovement relative thereto and adapted to be moved to release saidlocking means and to move said door toward open pos1t1on, and guidingmeans fixedly earned by said door and interlockingly engaging with saidoperating member.

9. In a device of the character described, in combination, a slidingdoor, means movably connected therewith adapted to be po sitioned tolock said door closed, an operating handle pivotally carried by saiddoor, means controlled by the movement of said handle to inoperativelyposition said locking means and to move said door toward open position,a guiding plate fixedly carried by said door and having a curved guidingedge, an oiiset carried by said handle interlockingly engaging with saidguiding plate and guiding on its curved edge, and means limit ing themovement of said handle in both directions.

HENRY G. VOIGHT. l/Vitnesses GwENDoLINE A. JACKSON, M. S. VVIARD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, i Washington, I). G.

